Design and Construction
The hull is hand-laid solid fiberglass, with the external lead keel bolted to the hull using stainless steel bolts and the factory roughly fairing the keel surface with polyester putty. The swept-back, fairly high aspect ratio fin keel drew on the IOR racing philosophy of the early 1970s, paired with a high aspect spade rudder faired into the underbody with a small skeg. The hull-to-deck joint is a practical assembly: an integral solid wood sheerstrake laminated into the hull strengthens the connection, the joint is filled with a fiberglass slurry, and a soft plastic rubrail held by an aluminum extrusion capped with stainless steel self-tapping screws finishes the seam. In high-stress zones such as the tops of the cockpit coamings where the winches mount, the laminate is reinforced with plywood. The interior is completely lined, which presents a clean finish but blocks inspection of the internal structure.
Rig and Handling
The Catalina 30 is a masthead sloop carrying a straight-section aluminum spar, double lower shrouds, and — at least on older hulls — wooden spreaders, with the mast stepped on deck atop a wooden compression column below. The standard rig measures an I dimension of 41 feet and a J of 11.5 feet, with a P of 35 feet and E of 11.5 feet; working sail area totals 446 square feet. The shrouds sit far enough inboard that crew can pass outside them heading forward. Writing in Practical Sailor, testers found the boat very stiff, though like many wide modern designs she rapidly develops weather helm when heeled anchor. A shoal-draft variant drawing 11 inches less than standard proved popular in thin-water regions, and a taller rig was offered for light-air areas.
Accommodations
The Mk II's most notable change is its T-shaped cockpit, large and comfortable enough with wheel steering to seat the helmsman and four companions. A large sail locker sits under the port cockpit seat and a smaller one under starboard, with a fair-sized lazarette properly separated from the under-cockpit space. Below, the forward cabin has large tapered V-berths forming a big double with a filler, while the main cabin offers an L-shaped settee to port and a straight settee to starboard, the table folding against the forward bulkhead. A large U-shaped galley to port carries a standard gimbaled alcohol stove with oven and double sinks, and a large double quarterberth lies under the starboard cockpit side, though headroom over the inboard half is barely over a foot.
Known Issues
The Catalina 30 showed consistent structural and hardware weaknesses in period examination. Every boat examined had some play in the rudder stocks. All showed local deflection of the top of the cabin trunk at the mast step, ranging from as little as 1/16 inch. Some owners report leaking stanchions, and the lifeline stanchions are through-bolted with washers rather than backing plates. The sliding companionway hatch is unnecessarily large, and because the main cabin bulkhead slopes forward the drop boards cannot be left out for ventilation in rain. A molded hatch in the front of the cabin trunk likely leaks in heavy weather. The optional shower and the uninsulated icebox both drain directly to the bilge, and the engine sits in the lowest part of the bilge where bilgewater can reach it. Under power the small diesel pushes the boat at about 5 knots in a flat calm but transmits substantial vibration through the unsoundproofed engine box, making the main cabin very noisy.
Refits and Ownership
Lower shroud chainplate attachments were beefed up after the first hulls were built, a meaningful reinforcement for any owner assessing an early example. Factory sails remained available at lower cost than comparable racing sailmaker or national-brand options. Double lifelines, double bow and stern rails, well-mounted teak grabrails, a small foredeck anchor well giving access to protected hull-mounted running lights, double bow and stern cleats without chocks, and a cockpit-operable manual bilge pump round out the standard specification.
The Verdict
The Catalina 30 Mk II refines a thoroughly proven cruiser-racer platform with a more usable T-shaped cockpit and the Mk II construction lineage. She is stiff and well-mannered under sail, with a practical deck layout and a roomy interior for her size, though the structural deflections, rudder play, and drainage paths into the bilge deserve a buyer's attention.
Pros
- Stiff, predictable handling with a well-developed masthead sloop rig
- Roomy accommodations including a large U-galley and convertible V-berths
- Reinforced chainplate attachments on later hulls
Cons
- Cabin trunk deflection at the mast step on all surveyed boats
- Rudder stock play and leaking-stanchion reports
- Shower and icebox draining to bilge; engine vulnerable to bilgewater
- Noisy, vibratory motoring from the unsoundproofed small diesel









